Fait mathématique: 23856 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 23856 is an uninteresting number.
Date historique: April 24th is the day in 1479 BC that Thutmose III ascends to the throne of Egypt, although power effectively shifts to Hatshepsut (according to the Low Chronology of the 18th Dynasty).